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Finding the Fourth Proportional to 531,717.42, 733,638.78 and 313,931.18

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Solution

The fourth proportional to 531,717.42, 733,638.78 and 313,931.18 is: 433,147.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,717.42 : 733,638.78 = 313,931.18 : x
  2. Step 2: Convert to fraction form
    531,717.42/733,638.78 = 313,931.18/x
  3. Step 3: Cross multiply
    531,717.42x = 733,638.78 × 313,931.18
  4. Step 4: Simplify right side
    531,717.42x = 230,312,087,899.16
  5. Step 5: Solve for x
    x = 230,312,087,899.16/531,717.42
  6. Step 6: Final answer
    x = 433,147.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.